Objective To investigate the clinical value of the 18F-FDG SPECT-CT combined with the image of CT in the diagnosis of lung cancer.Methods Retrospectively analysis images of 18F-FDG SPECT-CT and CT of 162 patients pulmonary tumor-like lesions from January 2013 to October 2013 were conducted.All the patients have been confirmed by the pathological mechanism or cytologic examination.Each patient has been firstly diagnosed by the 18F-FDG SPECT-CT along and then combined with the images of CT.The sensitive rate and the accurate rate of two methods were compared by x2 test.Results There were 40 benign lesions and 114 malignant ones in 162 patients.The sensitive rates of the two methods were 86.0％ and 96.5％ (x2 =6.63,P ＜ 0.05).The accurate rates of the two ways were 79％ and 96.3％ (x2 =7.76,P ＜ 0.05).The differences were statistically significant.Conclusion 18F-FDG SPECT-CT combined with the images of CT can increase the diagnostic sensitivity and accuracy.It has important clinical value.

Objective To compare the clinical characteristics of pregnant women with gestational diabetes mellitus (GDM) and normal gestational glucose metabolism at the 25th weeks of pregnant. Methods Sixty-eighty patients with GDM (GDM group) and 68 patients with normal blood glucose(control group) were enrolled in this study. During 25 weeks of pregnancy, oral glucose tolerance test (OGTT), blood pressure, fasting insulin, glycosylated hemoglobin, uric acid, triglyceride, total cholesterol, high density lipoprotein cholesterol and low density lipoprotein cholesterol were measured and body mass index (BMI), homeostasis model of assessment for insulin resistence index (HOMA-IR), insulin sensitivity index (ISI) were computed. The results were compared between two groups. Results The age in GDM group was significantly higher than that in control group: (31.38 ± 0.54) years vs. (29.50 ± 0.56) years, P<0.05. The systolic pressure in two groups had no significant difference (P>0.05), but diastolic blood pressure in GDM group was significantly higher than that in control group:(73.2 ± 0.8) mmHg vs. (70.9 ± 0.8) mmHg, 1 mmHg=0.133 kPa, P<0.05. The body weight and BMI in GDM group were significantly higher than that in control group:(65.67 ± 1.76) kg vs. (57.76 ± 1.11) kg, (24.77 ± 0.61) kg/m2 vs. (22.11 ± 0.42) kg/m2, P<0.01. The levels of glycosylated hemoglobin, fasting insulin and HOMA- IR in GDM group were significantly higher than those in control group (5.546 ± 0.746)% vs. (5.085 ± 0.034)% , (17.870 ± 1.015) mU/L vs. (14.400 ± 0.634) mU/L, 4.192 ± 0.271 vs. 2.645 ± 0.128, but the level of ISI in GDM group was significantly lower than that in control group:0.014 ± 0.001 vs. 0.020 ± 0.001, and there were significantly differences (P<0.01). The levels of uric acid, triglyceride, total cholesterol, high density lipoprotein cholesterol and low density lipoprotein cholesterol in two groups had no significant differences (P>0.05). Conclusions Compared to those with normal blood glucose, the patients with GDM have the characteristics of higher age, higher body weight, higher BMI, higher diastolic blood pressure , higher level of insulin, insulin resistance and decreased insulin sensitivity.

Objective To evaluate the precision of the ACCU-CHEK Performa glucose monitor,the Optium Xceed glucose monitor,the Breeze glucose monitor and the Contour glucose monitor.Methods A total of 102 patients (diabetic patients or un-diabetic patients) who visited our endocrinology outpatient department were randomly selected.The venous blood samples were collected using the laboratory auto-analyzer,and the synchronous finger tip capillary blood were collected using the ACCU-CHEK Performa glucose monitor and the Optium Xceed glucose monitor,or using the Breeze glucose monitor and the Contour glucose monitor.Results The correlation coefficients between VPG by the laboratory auto-analyzer and CBG by the four kinds of glucose monitors was good,and R values were 0.990,0.985,0.963,0.952,and there was no significant difference between the CBG of Breeze glucose monitor and the same VPG(P ＞ 0.05).When the blood glucose concentration was higher than 4.2mmol/L,and compared with the VPG detected by synchronous measurement laboratory,95％ of the CBG test results detected by four kinds of blood glucose meters were in the range of ± 20％.Conclusion The four kinds of glucose monitors can provide high accurate.

Objective To investigate the immunomodulatory effects of heme oxygenase-1 ( HO-1) modified rat bone marrow mesenchymal stem cells ( BM-MSCs) on lymphocytes .Methods Rat BM-MSCs were cultured and identified in vitro.HO-1 gene was transduced into BM-MSCs via recombinant adenovirus (rAdV) to construct HO-1/BM MSCs, which were then co-cultured with rat spleen lymphocytes .The cellu-lar activity of lymphocytes was detected by using MTT method .The cell cycle distributions were analyzed by propidium iodide staining and flow cytometry .ELISA was used to detect the level of cytokines in the super-natant of cultured cells .The expression of lymphocyte activation markers , CD25 and CD71, were measured by using fluorescence labeled antibodies and flow cytometry .Results Compared with the control group , the lymphocytes co-cultured with HO-1/BM MSCs showed a suppressed proliferation and cell cycle progression . HO-1/BM MSCs inhibited the secretion of IL-2, TNF-αand IFN-γ, but enhanced the secretion of IL-10 in lymphocytes.Furthermore, the expression of CD25 and CD71 were also down-regulated by HO-1/BM MSCs. Conclusion Compared with BM MSCs , HO-1/BM MSCs show higher immunosuppressive effects on lym-phocytes .

[Objective] The biocompatibility between SGBG/PHBV and human PDLC were investigated to provide a basis for the choice of the scaff material of periodontal tissue engineering.[Methods] Human PDLC were cultured using tissue-explant technique.Seeding on 96 wells plate,9 wells for one group,Four different concentrations (100％,75％,50％,25％,0％) of maceration extract of SGBG/PHBV were added into the culture plantsafter 48-h cell seeding,the grades of the cytotoxicity of SGBG/PHBV was evaluated by MTT assay.Human PDLC cultured in vitro were collected and seeded on the three-dimensional scaffolds of SGBG/PH-BV,the cellular morphology and cell growth on the scaffolds were observed and photographed by scanning electronic microscope.HumanPDLC seeded on the three-dimensional scaffolds of SGBG/PHBV in the experimental group,and human PDLC seeded by DMEM in the control group,after 12-,24-,and 48-h cell seeding,got 27 simples for each group,and the affection of the SGBG/PHBV on cell secretory function was observed by spectrophotometry which assayed the biochemical indexes ALP in supinate.[Results] The grades of the cytotoxicity of SGBG/PHBV were 0 and 1.It was displayed that human PDLC adhered and proliferated well on the scaffold of SGBG/PHBV under the scanning electronic microscope.The significant difference of ALP in supinate between the experimental group and the control group (P ＜ 0.05).[Conclusions] SGBG/PHBV had no cytotoxicity to human PDLC.SGBG/PHBV is potential to further study as the scaffolds of periodontal tissue engineering since it displayed the satisfactory biocompatibility with human PDLC.

Objective To establish a new flow-injection chemiluminescence(CL) method for the determination of hydrocortisone.Methods In H2SO4 solution,hydrocortisone could obviously enhance the chemiluminescence intensity of the reaction of KMnO4-Na2SO3 system.Based on this,a new flow-injection CL method for the determination of hydrocortisone was developed.Results There was a good linear relationship between CL intensity and the concentration of hydrocortisone in the range of 1.0?10-9-1.0?10-6g/mL.The detection limit was 4.0?10-10g/mL at a signal-to-noise ratio of 3∶1.The RSD of 11 assays was 2.2%.Conclusion This method can be successfully used to determine the quantity of hydrocortisone in injection.It is rapid,accurate,simple,and has high sensitivity and wide linear range.

Objective To investigate the pre-emptive analgesia effects of hydromorphone on stress reaction in patients undergoing gynecological laparoscopic surgery.Methods Forty ASA Ⅰ or Ⅱ patients [age:45-58 years,body mass index:18-24 kg· (m2)-1] undergoing gynecological laparoscopic surgery were randomly divided into 2 groups (n =20 for each group):treatment group and control group.Hydromorphone (1 mg) was intravenously injected before anesthesia in treatment group.In the two groups,after routine induction and incubation,remifentanil (0.2 μg· min-1 · kg-1) and propofol (0.1 mg· min-1· kg-1) were injected with micro perfusion pump,cisatracurium was injected intermittently.Injection of remifentanil and propofol was stopped when skin suture started.The concentrations of epinephrine(E) and norepinephrine(NE) were obtained before induction (t1),pneumoperitoneum (t2),1 h after pneumoperitoneum (t3) and extubation (t4),respectively.The heart rate,blood pressure and the time of operation to extubation of the patients were recorded.Results There were no significant changes in extubation time after operation among the groups.Heart rate and systolic blood pressure were significantly lower in the treatment group than in the control group (P ＜ 0.05).Plasma E and NE levels at t1 were significantly lower than those at t2,t3 and t4.Plasma E and NE were significantly lower in treatment group than that of control group at t2,t3 and t4 (P ＜ 0.05).Conclusion Pre-emptive analgesia of hydromorphone can significantly decrease the release of epinephrine and norepinephrine during and after laparoscopic surgery,restrain the increase of heart rate and systolic blood pressure during extubation,without influence of revival time.

A cross-sectional study was conducted in Heilongjiang in a representative sample of 2 875Chinese adults aged from 20 to 74 years. Questionnaire was conducted. Their height, weight, waist circumference,blood pressure, blood glucose, serum insulin, lipids, and other indexes were determined. The criterion of International Diabetes Federation was applied for metabolic syndrome (MS) diagnosis. The results showed that the preliminary prevalence rate of MS was 19.34% and the age-adjusted prevalence rate of MS was 21.92% ( male 20.41% , female 23.11% ). The prevalence rate of MS increased with the age. The prevalence rate in the urban area was higher than that in the town and rural area ( both P < 0.05 ). The result of multiple factor logistic regression analysis showed that body fat content, insulin resistance, age, residential difference, drinking habit,daily staple food quantity, urine albumin, education, family history of obesity, and gender were related with MS.

BACKGROUND:Early detection and accurate staging diagnosis of heart failure are the basis of good clinical therapy efficacy. Due to lack of simple and effective staging model for the diagnosis of heart failure, it is difficult to diagnose heart failure in clinics, leading to poor control of heart failure. OBJECTIVE:To establish the disease staging model based on Adaboost and SVM for heart failure, and improve the accuracy of diagnosis and staging of heart failure. METHODS:A total of 194 cases were roled into this study, including heart failure patients and healthy physical examination persons. According to the stage standards formulated by American Colege of Cardiology and American Heart Association, specific clinical feature parameters closely related to heart failure were colected and selected. Based on clinical diagnosis results and using Adaboost model and SVM model, we trained the models for heart failure diagnosis and staging, thus obtaining diagnosis model. RESULTS AND CONCLUSION: The parameters included stroke volume, cardiac output, left ventricular ejection fraction, left atrial diameter, left ventricular internal diameter at end-systole, N-terminal pro-brain natriuretic peptide and heart rate variability. As for the Adaboost model, its sensitivity and specificity was 100% and 94.4%, respectively. At the same time the SVM model had good sensitivity and specificity, 86.5% and 89.4% respectively. Adaboost classification model can be accurate in the diagnosis of heart failure symptoms, the accuracy reached 89.36%. On the basis of the diagnosis of heart failure, the SVM classification model is effective in staging the severity of heart failure, staging accuracy for staging B and C was 86.49% and 81.48%, respectively. The findings indicate that, combining Adaboost and SVM machine learning models could provide an accurate diagnosis and staging model for heart failure.

Objective:To study the surface structure and antibacterial property of Ag-containing coating(AgCC)on casting cobalt chromium alloy(Co-Cr).Methods:Plasma spraying technique was adopted to prepare AgCC on Co-Cr.Scanning electron microsco-py,energy dispersive analysis and X-ray diffraction analysis were used to evaluate the surface properties.The antibacterial effects of AgCC against staphylococcus aureus and candida albicans were examined by film attachment method.Fluorescence microscope was a-dopted to evaluate the bacteria adhesion property.Results:AgCC surface was uniform and compact,combined perfectly with sub-strate material.The content of the surface was mainly Ag,Cr and a small amount of Ag2 O and Cr2 O3 .The results of antibacterial as-say showed that on AgCC the number of bacterial colony was fewer(P<0.05)and bacterial adhesion was less than those on Co-Cr(P<0.05).Conclusion:AgCC surface was stable and has antibacterial property.